Process for coating and surfacing prepared roofing



April 15, 1930.-

w. H. CADY PROCESS FOR COATING AND SURFACING PREPARED ROOFING Filed March 19 Patented Apr. 15, 1930 UNITED STATES PATENT OFFICE WALTER H. OADY, OF BEOWAWE, NEVADA, ASSIGNOR, BY MESNE ASSIGNMENTS, TO

THE PATENT AND LICENSING CORPORATION, 013 BOSTON, MASSACHUSETTS, A (203- PORA'IION OF MASSACHUSETTS PROCESS FOR COATING "AND SURFACING PREPARED ROOFING Application: filed March 19, 1926. Serial No. 95,820.

This application is a continuation of application Serial'No. 526,329, filed December 31, 1921, now Patent No. 1,599,512, Sept. 14,

1926, as to all subject matter common to both.

The invention relates to a process and ma- ,chine for coating and surfacing prepared shingles and 'refers more particularly to a process "and apparatus in which prepared Figure 2 is a side elevationwith a sub-' stantial part of the machine omitted for clearness in showing the salient points of the invention.

Referring to the drawings, strip shingle blanks cut from prepared roofing material common in the art, such as sheets of unsaturated felt or sheets of saturated felt which have been coated with asphalt and surfaced with crushed slate or other crushed mineral material, are introduced between the rolls 1 and 2, being engaged by the upper roll by lugs 3 positioned thereon in a manner to register with the cut-out portions l of the strip shingles 5. .A central guide 6 in the center of the upper roll 1 serves to properly feed the shingle units and to prevent their lateral displacement as they progress onto the endless belt 7 which may be made of any suitable material. The strip shingles as they are fed between the rolls are coated over all their surfaces and edges with. a moltenbituminousmastic substance, such as asphalt, or other waterproofing substances which are ordinarily used to coat prepared roofing. The asphaltic coat: ing substance is maintained in a tank 8,which ispositioned over-the rolls so that the heated asphaltic coating in a'fluid or semi-fluid condition flows down through the funnel-like spouts 9 and collects behind a doctor knife-10 which serves to spread the waterproofing substance evenly over' the surface of the roll so that it will be uniformly'fed as a coating substance onto a strip shingle. It also prevents the collection of accumulations of the waterproofing substance on the. upper roll. Any excess waterproofing substance will be carried off into the lower pan or container which is situated below the lower roll. The endless belt 7 runs over a plurality of spools 12 and passes'under a hopper '13 and between pressure rolls 14 and 15, the strip shingles after beinr coated, while passing between the rolls 1 anc 2, progress with the belt until they reach a position beneath the hopper 13. This hop-- per contains granular surfacing material,

, such as ground slate, which is fed onto the adhesive coating on the upper surface and all the ed es of the shingle, the excess surfacing collecting upon the belt. The shingles then pass on between thepressure rolls 14 and 15 where the surfacing material is pressed into the coating to form the completed product.

After leaving the pressure rolls, the shingles leave the .endless belt and pass onto a receiving belt 16 which conveys them to a refrigerator. Beneath the end of the endless belt 7 is a pan or hopper, as shown at 17 in which collects the excess surfacing material which is deposited upon the belt during its passage under the hopper 13. At 18 is situated a cleaning brush which is rotated in a manner to thoroughly clean the surface of the belt .prior to its return to receive the coated shingles from the rolls 1 and 2.

The driving mechanism of the respective rolls and spools for running the belts has been lugs 3 on the rolled in registering with the cutt out portions of the shingle units keep the cutthrough the initial coating stage.

belngcovered with coating material from t e container 8 and being somewhat smaller than out ortions free of excess coating material whic would tend to collect-and form a web across the cut-outs as the strip shin les pass he 111 the cut-outs, carry sufiicient'coatin material into the cut-outs to coat their e ges thoroughly. Thefilms of coating material on the rolls 2, 3, meet around the outer edge of the shingle and thus complete the encasing of the unit'ivith an envelope of coating material over its entire surface, and this coating is surfaced with the slate or other "grit.

I claim:

1. The process of treatin individual shingle units out from prepares r having butt and adjacent side edges which includes the successive steps of coating all portions of the units uniformly with waterproofing bituminous material and applying grannlar surfacing material to the units in a continuous operation.

2. Theprocessoftreatingindividualshingle "units out from prepared roofing and having butt and adjacent side edges, which process includes the successive steps of coating portions of the unit including the butt and side .edges with bituminous material and applying granular surfacing material to the units in a continuous operation.

In testimony whereof I have afiixed my signature.

WALTER H. CADY. 

